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 Найдено в других БД:Труды Института высокотемпературной электрохимии УрО РАН (1)
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Поисковый запрос: (<.>K=CAVITATION<.>)
Общее количество найденных документов : 32
Показаны документы с 1 по 10
 1-10    11-20   21-30   31-32 
1.
Инвентарный номер: нет.
   
   B 16

    Baidakov, V. G.
    Surface tension of cavitation pockets according to data of computer simulation of nucleation in a stretched fluid [Electronic resource] / V. G. Baidakov // Colloid Journal (Translation of Kolloidnyi Zhurnal). - 2015. - Vol. 77, № 2. - С. 119-124. - Bibliogr. : p. 124 (40 ref.)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
CRITICAL CAVITATION POCKETS -- lENNARD-JONES FLUID
Аннотация: Surface tension γ and effective radius R of critical cavitation pockets in a stretched Lennard-Jones fluid have been determined from the data on pocket formation work W *. The W * value has been calculated in terms of the stationary homogeneous nucleation theory from the results of molecular dynamics simulation of the parameters of cavitation process in a range of reduced temperatures T* = k B T/ɛ = 0.35–0.8. The calculated data have been approximated by the extended Tolman equation, which, in addition to linear correction (∼δ∞/R), takes into account the quadratic correction (∼l 2/R 2) for curvature to the surface tension of a critical pocket. It has been shown that parameter δ∞ is negative and amounts to a few tenths of an atom diameter, with the value of l being substantially dependent on temperature and reaching the diameter of a Lennard-Jones atom at the upper boundary of the considered temperature range.

\\\\expert2\\nbo\\Colloid Journal\\2015, V.77, N2,119.pdf
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2.
Инвентарный номер: нет.
   
   B 16

    Baidakov, V. G.
    Surface tension of cavitation pockets according to data of computer simulation of nucleation in a stretched fluid [Electronic resource] / V. G. Baidakov // Colloid Journal (Translation of Kolloidnyi Zhurnal). - 2015. - Vol. 77, № 2. - С. 119-124. - Bibliogr. : p. 124 (40 ref.)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
CRITICAL CAVITATION POCKETS -- lENNARD-JONES FLUID
Аннотация: Surface tension γ and effective radius R of critical cavitation pockets in a stretched Lennard-Jones fluid have been determined from the data on pocket formation work W *. The W * value has been calculated in terms of the stationary homogeneous nucleation theory from the results of molecular dynamics simulation of the parameters of cavitation process in a range of reduced temperatures T* = k B T/ɛ = 0.35–0.8. The calculated data have been approximated by the extended Tolman equation, which, in addition to linear correction (∼δ∞/R), takes into account the quadratic correction (∼l 2/R 2) for curvature to the surface tension of a critical pocket. It has been shown that parameter δ∞ is negative and amounts to a few tenths of an atom diameter, with the value of l being substantially dependent on temperature and reaching the diameter of a Lennard-Jones atom at the upper boundary of the considered temperature range.

\\\\expert2\\nbo\\Colloid Journal\\2015, V.77, N2,119.pdf
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3.
Инвентарный номер: нет.
   
   B 16

    Baidakov, V. G.
    Spontaneous cavitation in a Lennard-Jones liquid at negative pressures [Electronic resource] / V. G. Baidakov, K. S. Bobrov // Journal of Chemical Physics. - 2014. - Vol.140, №18. - С. 184506. - Bibliogr. : p. 184506 (65 ref.)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
MOLECULAR DYNAMICS -- LENNARD-JONES LIQUID -- NEGATIVE PRESSURES
Аннотация: We report a molecular dynamics (MD) study of homogeneous bubble nucleation in a Lennard-Jones liquid under a negative pressure (cavitation). The rate of bubble nucleation has been determined in the range 2×10- 9
\\\\expert2\\nbo\\Journal of Chemical Physics\\2014, v.140, p.184506.pdf
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4.
Инвентарный номер: нет.
   
   B 16

    Baidakov, V. G.
    Spontaneous cavitation in a Lennard-Jones liquid at negative pressures [Electronic resource] / V. G. Baidakov, K. S. Bobrov // Journal of Chemical Physics. - 2014. - Vol.140, №18. - С. 184506. - Bibliogr. : p. 184506 (65 ref.)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
MOLECULAR DYNAMICS -- LENNARD-JONES LIQUID -- NEGATIVE PRESSURES
Аннотация: We report a molecular dynamics (MD) study of homogeneous bubble nucleation in a Lennard-Jones liquid under a negative pressure (cavitation). The rate of bubble nucleation has been determined in the range 2×10- 9
\\\\expert2\\nbo\\Journal of Chemical Physics\\2014, v.140, p.184506.pdf
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5.
Инвентарный номер: нет.
   
   B 16

    Baidakov, V. G.
    Attainable superheating of liquefied gases and their solutions : review [Electronic resource] / V. G. Baidakov // Fizika Nizkikh Temperatur. - 2013. - Vol.39, №8. - P835-862. - Bibliogr. : p. 861-862 (87 ref)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
CAVITATION -- CRYOGENIC LIQUIDS -- META-STABLE STATE
Аннотация: The review is mainly concerned with the kinetics of spontaneous boiling-up of liquefied gases and their solutions. It examines the theories of thermofluctuation and quantum nucleation in metastable liquids. The methods of experimental investigation of nucleation kinetics are given. The experimental data on temperature of attainable superheating of cryogenic liquids and solutions of liquefied gases are presented for a wide range of pressures, including negative ones. The properties of new-phase nuclei near the attainable super-heating boundary are discussed. The kinetics of initiated and heterogeneous nucleation is considered. The experimental data on detection of quantum tunneling of nuclei are given. Experimental data are compared with the theories of thermofluctuation and quantum nucleation

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6.
Инвентарный номер: нет.
   
   B 16

    Baidakov, V. G.
    Attainable superheating of liquefied gases and their solutions : review [Electronic resource] / V. G. Baidakov // Fizika Nizkikh Temperatur. - 2013. - Vol.39, №8. - P835-862. - Bibliogr. : p. 861-862 (87 ref)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
CAVITATION -- CRYOGENIC LIQUIDS -- META-STABLE STATE
Аннотация: The review is mainly concerned with the kinetics of spontaneous boiling-up of liquefied gases and their solutions. It examines the theories of thermofluctuation and quantum nucleation in metastable liquids. The methods of experimental investigation of nucleation kinetics are given. The experimental data on temperature of attainable superheating of cryogenic liquids and solutions of liquefied gases are presented for a wide range of pressures, including negative ones. The properties of new-phase nuclei near the attainable super-heating boundary are discussed. The kinetics of initiated and heterogeneous nucleation is considered. The experimental data on detection of quantum tunneling of nuclei are given. Experimental data are compared with the theories of thermofluctuation and quantum nucleation

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7.
Инвентарный номер: нет.
   
   V 70

    Vinogradov, V. E.
    Cavitation strength of liquids with large molecules [Electronic resource] / V. E. Vinogradov, P. A. Pavlov // International Journal of Modern Physics B. - 2013. - №2. - P1-10
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
CAVITATION STRENGTH -- HOMOGENEOUS NUCLEATION THEORY
Аннотация: The cavitation strength of liquids has been studied at atmospheric pressure by applying tensile stress pulses of duration up to 3 μs and amplitude up to 20 MPa within the temperature range from room temperature to the temperature of explosive boiling-up of the liquid. At high temperatures, where in absolute value the tensile strength does not exceed 1-2 times the critical pressure, agreement between classical nucleation theory and experiment is observed within the experimental error. With a decrease of the temperature the tensile strength of the liquid increases, but the experimental values of the breaking strength are lower than those predicted from theory. The dependence of the degree of discrepancy between theory and experiment on the number of atoms in the molecules of the liquids investigated is shown

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8.
Инвентарный номер: нет.
   
   V 70

    Vinogradov, V. E.
    Cavitation strength of liquids with large molecules [Electronic resource] / V. E. Vinogradov, P. A. Pavlov // International Journal of Modern Physics B. - 2013. - №2. - P1-10
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
CAVITATION STRENGTH -- HOMOGENEOUS NUCLEATION THEORY
Аннотация: The cavitation strength of liquids has been studied at atmospheric pressure by applying tensile stress pulses of duration up to 3 μs and amplitude up to 20 MPa within the temperature range from room temperature to the temperature of explosive boiling-up of the liquid. At high temperatures, where in absolute value the tensile strength does not exceed 1-2 times the critical pressure, agreement between classical nucleation theory and experiment is observed within the experimental error. With a decrease of the temperature the tensile strength of the liquid increases, but the experimental values of the breaking strength are lower than those predicted from theory. The dependence of the degree of discrepancy between theory and experiment on the number of atoms in the molecules of the liquids investigated is shown

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9.
Инвентарный номер: нет.
   
   B 16

    Baidakov, V. G.
    Boiling-up of liquid argon at high superheatings under the impact of weak ultrasonic fields / V. G. Baidakov, A. M. Kaverin, V. N. Andbaeva // Thermophysics and Aeromtchanics. - 2011. - Vol.18, №1. - С. 31-36
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
NUCLEATION -- KRYPTON
Аннотация: The technique of lifetime measurement for metastable liquid and continuous depressurization technique were applied for study of kinetics of spontaneous cavitation in superheated liquid argon under impact of weak ultrasonic fields. It was demonstrated that acoustic cavitation may occur through the mechanism of homogeneous generation of vapor phase or through "swinging" of vapor bubbles generated by high-energy particles and/or other kinds of initiative factors. The thresholds of acoustic cavitation are described by the theory of homogeneous nucleation

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10.
Инвентарный номер: нет.
   
   B 16

    Baidakov, V. G.
    Cavitation and crystallization in a metastable Lennard-Jones liquid at negative pressures and low temperatures [Electronic resource] / V. G. Baidakov, K. S. Bobrov, A. S. Teterin // Journal of Chemical Physics. - 2011. - Vol.135, №5. - P054512
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
SOLID-LIQUIDS -- LIQUIDS -- LENNARD-JONES
Аннотация: Molecular dynamics simulations have been used to investigate the kinetics of spontaneous cavitation and crystallization in a Lennard-Jones liquid at negative pressures in the temperature range where these processes compete with each other. The nucleation rate has been calculated in NVE and NpT ensembles by the method of mean lifetime and the transition interface sampling method with parallel path swapping. The data obtained have been used to determine in the framework of classical nucleation theory the value of the ratio of the solid–liquid and the liquid–void interfacial free energy for critical crystals and cavities and the values of their volumes at points where the cavitation rate of the liquid is equal to the rate of its crystallization

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